Istros, Thrace, AR drachm, 17mm, 5.58 g. 

Two facing male heads, the right inverted.
ISTRIH, sea-eagle standing left on dolphin.

H beneath eagle's wing, upside down Delta beneath dolphin. 

Canarache 208 and 226.

With permission of cngcoins.com, auction 105, Lot 43, May 2017.